/Engine/Source/Runtime/Engine/Public/Physics/SimpleSuspension.h
Returns true if it was able to find a valid mass configuration. If only one or two springs are included, then a valid configuration may not result in a stable suspension system - a bicycle or pogostick, for example, which is not perfectly centered may have a valid sprung mass configuration without being stable.
static bool ComputeSprungMasses ( const [TArray](API\Runtime\Core\Containers\TArray)< FVector > & MassSpringPositions, const float TotalMass, [TArray](API\Runtime\Core\Containers\TArray)< float > & OutSprungMasses, [FString](API\Runtime\Core\Containers\FString) * ErrMsg )